- >> each R gets no more than 1.1 Watts at full voltage output, so this
Thanks, it looks more important than you say.
I think you underestimated the voltage. SQRT(P*R) = V; gives over 14 kV per resistor. All of a sudden, cleanliness (fingerprints, etc.,) and lead dress are very important. Finally, the body size is not sufficient for that voltage, switch to properly specified high voltage resistors.
?-)